Automatic wagon-scale



(No Model.) 2 Sheets-Sheet 1.

H. H. FREEMAN.

AUTOMATIC WAGON SCALE.

No. 601,339. Patented Ma.1.29,1898.

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(No Model.) 2 Sheets-Sheet 2,

H. H. FREEMAN.

AUTOMATIC WAGON SCALE.

NO. 601,339. Patented M3J1.29,1898.

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UNITED STATES PATENT EErcE.

HERBERT II. FREEMAN, OF PIERRE, SOUTH DAKOTA.

AUTOMATIC WAGON-SCALE.

SPECIFICATION forming part of Letters atent No. 601,339, dated March 29,1898.

Application filed April 6, 1897- Selial No. 631,001. (No model.)

.T0 all whom t may concern.-

Be it known that I, HERBERT H. FREEMAN, a citizen of the United States,residing at Pierre, in the county of Hughes and State of South Dakota,have invented certain new and useful Improvements in a Combined Vagonand Automatic Scale; and I do declare the following to be a full, clear,and exact de scription of the invention, such as will enable othersskilled in the art to which it appcrtains to make and use the same.

My invention has relation to improvements in combined wagons 5 and theobject is to provide an ordinary wagon or dray with compressionebolstersand a scale whereby the load may be indicated at a glance.

To this end the invention consists in the construction, combination, andarrangement of the parts, as will be hereinafter more fully described,and particularly pointed out in the claims.

In the accompanying drawings the same reference-numerals indicate thesame parts of the invention.

Figure 1 is a perspective view of a weighingwagon embodying myinvention. Fig. 2 is a longitudinal section of the same. Fig. 3 is atransverse section through the front bolster, and Fig. 4L is a frontview of the weight-indicating gage.

l represents the front bolster plate, the outer ends of which are formedwith the integral ears 2 2, to which are secured the brackets 3 3, whichin turn are pivoted to the outer ends of the spring 4 by theconnecting-bars 5.

6 represents a flexible rubber cushion, its lower side secured to thebolster-plate l by rivets 7, so as to form an air-tight joint. A topbolster-plate S is similarly secured to the upper side of said cushionin such a manner as to support the wagoirbed and load in a horizontalposition and at the same time allow the top bolster-plate to approachand recede from the bottom plate in parallel lines. These cushions maybe made in the usual manner of air-pillows and the like; but in practiceI have found the ordinary canvas-andrubber hose from four to six inchesin diameter to answer the purpose. I cnt oft a section of hose about thelength of the bolster-plate and bring the ends 9 9 to form langes. Ithen place a metal plate lO on each sido of the flanges and secure thewhole together by a series of rivets l2 l2.

13 13 represent standards extending upward from the top bolster-plate toretain the wagonbody in place.

The top bolster-plates 8 and le are each provided with a horizontal earl5, to which is fixed theV upper end of a guide-bolt 16, which extendsdownward through a guide-orifice in the projecting ear l5 on the lowerbolsterplates to preserve the parallel motion of the upper and lowerbolstenplates when the vchicle is moving.

17 represents a threaded pipe or nipple provided with an integral flange18, resting on the inner face of the lower side of the cushion, thenipple extending downward through the cushion and lower bolster plate l,where it receives a threaded collar 19, which forms an air-tight jointin the cushion. One of vthese nipples is centrally secured in the bottomor side of each cushion, and they are connected to the ends of ahorizontal pipe 2O by the flexible elbows 2l 2l, which are secured tothe ends of the pipe and nipples by the usual clamps. This constructionequalizes the load or pressure on the cushions and preserves theirhorizontal parallelism under varying loads.

22 represents a pressure-gage connected to one of the cushion-bolstersby a short pipe 23, provided with a plug-cock 24. This gage may be ofany approved form to correctly operate the pointer or hand 25, the onlydifference being that the dial or scale 26 is centrally mounted on asleeve 27, through which the pointer-shaft passes. The rim of this dialis provided with a threaded radial stud 28, which projects through aslot 29 in the case of the gage, and its outer end carries a thumb-nut30, by means of which the dial may at any scale on the dial correspondsto the pound weight, and when the wagon is loaded the total weight ofthe load is indicated on the dial, and any predetermined amount may bctaken off by noting the variations of the gage.

Vhile the device is intended as a pneumatic scale, it is evident thatany suitable liquid may be employed in the cushion-bolsters besides airor gas and the same result accomplished.

Although l have specifically described the construction and relativearrangement of the several elements of my invention, l do not desire tobe conined to the same, as such changes or modifications may be made asclearly fall Within the scope of my invention Without departing from thespirit thereof.

Various minor changes in the construction will be made to adapt myinvention to different forms of vehicles, and notably in the case ofdrays for heavy hauling the standards are dispensed with and suitabletruss-rods, such as are shown in Fig. l, extend under the belsters fromend to end to support the load.

Having thus fully described my invention7 what l claim as new anduseful, and desire to sec re by Letters Patent ofthe United States, is

l. A pneumatic bolster for vehicles comprising a length of hose ortubing having its ends closed by transverse clamping-plates, upper andlower supporting-plates secured to the hose by rivets, said platesextended beyond the surface of the hose and connected by guide-bolts,substantially as described.

2. A wagon provided with compressible pneumatic bolsters made fromlengt-hs of flexible hose clamped at the ends to render them air-tight,each bolster having upper and lower supporting-plates riveted thereto,guidebolts connecting the plates, a pipe extending from one bolster tothe other, and a tube connected With one of the bolsters andcommunicatin g with a gage for indicating the Weight of the load,substantially as described.

ln testimony whereof l hereunto aflix my signature in presence of tivoWitnesses.

HERBERT Il. FREEMAN. 1Witnesses:

WILLIAM A. llING, JAMES W. MORSE.

